Here’s a collection of strings written by teacher participants at the Summer Institute at Math in the City (City College, … More
Category: array model (rational number)
Multiplying fractions: Why context matters
Our fifth grade team was trying to encourage students to use a visual model to represent their thinking when they … More
Photo number strings for multiplication
Here are two photos I snapped as I walked by a 99 cent store in LA. Beautiful arrays, no? I … More
A Dilemma with Models
A 5th grade teaching team I work with recently raised the issue of how to model the problem 1/2 x … More
Number Strings 